1,3-Dioxa-9-azaspiro(5.5)undecane, 5-ethyl-9-(3-(p-fluorobenzoyl)propyl)-2-methyl-, oxalate 63377-12-8 BUTYROPHENONE, 4-(5-ETHYL-2-METHYL-1,3-DIOXA-9-AZASPIRO(5.5)UNDEC-9-YL)-4'-FLUOR Butyrophenone, 4-(5-ethyl-2-methyl-1,3-dioxa-9-azaspiro(5.5)undec-9-yl)-4'-fluoro-, oxalate Methyl-2 ethyl-5 (fluoro-4'-benzoyl)-3 propyl-9 dioxa-1,3 aza-9 spiro(5.5)undecane oxalate